25021294843 has 2 divisors, whose sum is σ = 25021294844. Its totient is φ = 25021294842.

The previous prime is 25021294783. The next prime is 25021294861. The reversal of 25021294843 is 34849212052.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25021294843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25021294796 and 25021294805.

It is not a weakly prime, because it can be changed into another prime (25021294343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12510647421 + 12510647422.

It is an arithmetic number, because the mean of its divisors is an integer number (12510647422).

Almost surely, 2^25021294843 is an apocalyptic number.

25021294843 is a deficient number, since it is larger than the sum of its proper divisors (1).

25021294843 is an equidigital number, since it uses as much as digits as its factorization.

25021294843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 25021294843 in words is "twenty-five billion, twenty-one million, two hundred ninety-four thousand, eight hundred forty-three".